Compatible with HP

HP EliteBook 845 G9 6F6R9EA Replacement Battery - Replaces WP03XL

$35.54In stock

Why this battery

Fits HP EliteBook 845 G9 and replaces WP03XL, HSTNN-1B9Y, HSTNN-LB8V, HSTNN-LB8W battery pack.
11.58V, 4250mAh chemistry powers full workday operation on business notebooks.
Connector seats flush into EliteBook 845 G9 battery slot with positive-pin-first orientation.
We cycled this cell on bench against HP fuel gauge IC; BMS drew steady 90mA at rest, voltage held flat through discharge.
After install, run one full discharge to hibernation-cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears health warnings that appear after every cell swap.

11.58V4250mAhLi-Polymer

Fits 166 models · Replaces 9 part numbers

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Ships from Hong Kong Warehouse · Delivery in 28-45 days

$35.54Quantity 1

About this replacement

HP EliteBook 845 G9 — 11.58V Li-Polymer Replacement Battery (WP03XL)

This is an 11.58V, 4250mAh (49.22Wh) Li-Polymer battery replacing the WP03XL cell in HP EliteBook 845 G9 and related EliteBook 840 G9 and 1040 G9 business notebooks. It fits the multi-model EliteBook line sharing the WP03XL platform, including the 6F6R9EA and 5Z6N4EA variants. Voltage and connector match the original HP specification exactly.

EliteBook 840/845/1040 G9 platform fit: These models share the same battery bay geometry, connector pinout, and BMS handshake protocol. HP standardised the WP03XL cell across the G9 EliteBook line, so one cell covers the full chassis family without modification.
Bench tested on actual hardware: We ran this cell on an EliteBook 845 G9 and confirmed the BMS handshake completed correctly — BIOS recognised the battery, charge cycles initiated normally, and the protection circuit responded to charge cutoff at full capacity without fault codes.
BIOS learn cycle after installation: After fitting, run the laptop down to hibernate cutoff on battery alone, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle, clears the false "poor health" warning that appears after a cell swap, and gives the fuel gauge IC a clean baseline against the new cell's actual chemistry.

Why the EliteBook 845 G9 BIOS flags a new battery as poor health

The HP BIOS reads health data stored in the battery's EEPROM, not live cell voltage. When you swap cells, the EEPROM on the replacement doesn't match the charge history the BIOS was tracking on the old unit. The system interprets this mismatch as degradation. Running one full discharge-to-hibernate followed by an uninterrupted full charge lets the BIOS re-index against the new cell and clears the warning on most G9 units.

EliteBook shutting down at 20–30% charge remaining after battery swap

This is a voltage cliff symptom. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC expects based on uncalibrated EEPROM data from the old battery. The BIOS triggers a protection shutdown before the displayed percentage reaches zero. Two to three full discharge and charge cycles recalibrate the fuel gauge IC to the new cell's actual discharge curve. After calibration, shutdown should not occur above 5–7% on normal workloads.

Compatibility

Check your original model and part number before ordering.

Compatible brands

Fit Model

EliteBook 845 G9 6F6R9EAElitebook 840 G9 5Z6D3EAEliteBook 845 G9 5Z6N4EAEliteBook 1040 G9 4B928AVEliteBook 840 G9 5Z696EAElitebook 1040 G9 5P6Q0EAEliteBook X360 830 G9 5P790EAZBook Firefly 14 G9 6N2F6UTEliteBook 840 G10EliteBook 830 G9 6K965PAEliteBook 830 G9 6K974PAEliteBook 830 G9 6F6Z1EAEliteBook 835 G9 6H746UTEliteBook 835 G9 5Z5D7EAEliteBook 845 G9 6H5D2UTEliteBook 845 G9 6X2Q6PAEliteBook 840 G9 6F6Z5EAEliteBook 845 G9 5Z5E9EAEliteBook 840 G9 6T220EAEliteBook 840 G9 6F6Q1EAEliteBook 1040 G9 6E5C8UTEliteBook X360 830 G9 6G9L5PAZbook Firefly 14 G9 6N2G0UTEliteBook 830 G10 7Y3E4UTElitebook 830 G9 6Y518PAEliteBook 840 G10 7Y359UTEliteBook 830 G9 6K975PAEliteBook 830 G9 6G9E9PAEliteBook 830 G9 6K581PAEliteBook 835 G9 6F6E9EAEliteBook 845 G9 6F6G4EAEliteBook 835 G9 6G9J6PAEliteBook 840 G9 6W7N9PAEliteBook 845 G9 6Q2U0PAEliteBook 865 G9 6F6H2EAEliteBook 845 G9 5P721EAElitebook 840 G9 6G9G1PAEliteBook 845 G9 6F5S8EAElitebook 1040 G9 72G58PAEliteBook 840 G9 5Z6D4EAEliteBook 1040 G9 6E5C5UTEliteBook X360 830 G9 6F6K2EAZBook Firefly 14 G9 6W236UAEliteBook 840 G10 7Y389UTEliteBook 830 G9 6K961PAEliteBook 830 G9 6K981PAEliteBook 830 G9 6F6Y9EAEliteBook 835 G9 6H745UTEliteBook 835 G9 5Z5V2EAZBook Firefly 14 G9-6B8A2EAEliteBook 845 G9 6X2R1PAEliteBook 840 G9 6W3C6PAEliteBook 865 G9 6G9S4PAEliteBook 845 G9 5Z5P1EAEliteBook 1040 G9 4B923AVEliteBook 840 G9 5P6X7EAEliteBook 1040 G9 6E5C6UTEliteBook X360 830 G9 6K976PAZbook Firefly 14 G9 6Q426UTEliteBook 830 G10 7Y377UTEliteBook 830 G9 6C166UTEliteBook 840 G10 8B7U7UPEliteBook 830 G9 6K971PAEliteBook 830 G9 6F6T2EAEliteBook 835 G9 6G9J3PAEliteBook 835 G9 6F6F0EAEliteBook 845 G9 6G9U2PAEliteBook 835 G9 6G9K2PAEliteBook 840 G9 6C1Z3UTEliteBook 845 G9 6Y5Z8ECEliteBook 845 G9 6F679EAElitebook 840 G9 6F6Z2EAEliteBook 845 G9 6G9U3PAEliteBook 1040 G9 6F686EAEliteBook X360 830 G9ZBook Firefly 14 G9 6B878EAEliteBook x360 830 G9 6T141EAZbook Firefly 14 G9 6N2F7UTEliteBook 840 G10 7Y365UTEliteBook 830 G9 6K963PAEliteBook 830 G9 6F6J7EAEliteBook 830 G9 6G9F7PAEliteBook 835 G9 6F6J0EAEliteBook 845 G9 6H5D4UTEliteBook 835 G9 6G9K0PAZBook Firefly 14 G9 6B899EAEliteBook 845 G9 6V2W0PAEliteBook 840 G9 6W7P0PAEliteBook 865 G9 6G9K8PAEliteBook 845 G9 5Z6L9EAEliteBook 1040 G9 4B925AVEliteBook 840 G9 5P6X6EAEliteBook 1040 G9 6E5C7UTEliteBook X360 830 G9 6C160UTZbook Firefly 14 G9 6V2U0PAEliteBook 830 G10 7Y3P2UTEliteBook 830 G9 6C1V0PAEliteBook 840 G10 84F30UPEliteBook 830 G9 6K973PAEliteBook 830 G9 5P795EAEliteBook 835 G9 6H5U5UTEliteBook 835 G9 5P6V3EAEliteBook 845 G9 6F6G5EAEliteBook 845 G9 6Q2T2PAEliteBook 840 G9 6Q160PAEliteBook 845 G9 6T1J3EAEliteBook 845 G9 6F6F3EAEliteBook 840 G9 6G9G5PAEliteBook 845 G9 6G9K4PAEliteBook 1040 G9 6G9L7PAEliteBook X360 830 G9 3F9X9PAZBook Firefly 14 G9 6B8F0EAEliteBook x360 830 G9 5P7V7ESZbook Firefly 14 G9 6V1T1PAEliteBook 840 G10 7Y361UTEliteBook 830 G9 6K966PAEliteBook 830 G9 6F6K0EAEliteBook 830 G9 6G9E8PAEliteBook 835 G9 6F6J1EAEliteBook 845 G9 5P722EAEliteBook 835 G9 6G9J4PAEliteBook 840 G9 6F6J5EAEliteBook 845 G9 7G027ECEliteBook 865 G9 6G9K6PAEliteBook 845 G9 6F6S0EAElitebook 840 G9 6C182UTEliteBook 845 G9 6F6C3EAEliteBook 1040 G9 4B927AVEliteBook 840 G9 5Z6D5EAEliteBook 1040 G9 6F6N8EAEliteBook X360 830 G9 6C161UTZBook Firefly 14 G9 6X1E1PAEliteBook 830 G10 7Y382UTEliteBook 830 G9 6K958PAZBook Firefly 16 G9EliteBook 830 G9 6K977PAEliteBook 830 G9 6F609EAEliteBook 835 G9 6T1L7EAEliteBook 835 G9 5P796EAEliteBook 845 G9 6F6H7EAEliteBook 845 G9 7A4W1PAEliteBook 840 G9 6G9G3PAEliteBook 845 G9 5Z5H5EAElitebook 840 G9 5P755EAEliteBook 845 G9 6G9S1PAEliteBook 1040 G9 6G9M2PAEliteBook x360 830 G9 6K580PAZbook Firefly 14 G9 6N2J9UTEliteBook 830 G10 7Y379UTElitebook 830 G9 6Y519PAEliteBook 840 G10 7Y390UTEliteBook 830 G9 6K968PAEliteBook 830 G9 6Z2A8PAEliteBook 830 G9 6G9F2PAEliteBook 835 G9 5P726EAEliteBook 845 G9 6F6F5EAEliteBook 835 G9 6G9J5PAEliteBook 840 G9 5P6S0EAEliteBook 845 G9 6Q2U1PAEliteBook 865 G9 75V88PAEliteBook 845 G9 5P720EAElitebook 840 G9 6W9U7PAEliteBook 845 G9 5Z5F2EAEliteBook 1040 G9 6F6Y5EAEliteBook 840 G9 5Z695EAElitebook 1040 G9 6G9M4PA

Part Number

WP03XLHSTNN-1B9YHSTNN-LB8VHSTNN-LB8WM64304-1D1M64304-421M64305-421M73466-005HSTNN-LB9Y

Specifications

Battery typeLi-Polymer

Voltage11.58V

Capacity4250mAh

Wh49.22Wh

Dimensions251.50 x 84.20 x 6.40mm

Weight

Connector

ChemistryLi-Polymer

Shipping and safety

UN number:

Standard carrier options available

UN38.3 documentation pending

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